HOW TO GROW AND MARKET FR|UIT 



INSECTICIDES FOR CHEWING INSECTS 



6. Arsenate of Lead. This poison can be bought in the form 

 of a stiff, white paste, ready to use by diluting one to three 

 pounds of this paste with fifty gallons of water. The paste 

 usually comes in kegs or cans, and nearly every one will find it 

 the best form to buy. Care must be taken that this paste does 

 not dry out. It will not do this if the surface is kept covered 

 with an inch or two of water. 



The home-mixed poison is made as follows, but, though 

 it is possible to make it cost a little less than the commercial 

 paste, home manufacture is seldom advisable. Four ounces of 

 arsenate of soda, eleven ounces of acetate of lead and eighteen 

 gallons of water are the materials. Dissolve the arsenate of 

 soda in two quarts of water, in a wooden vessel. Then dissolve 

 the acetate of lead in four quarts of water in another wooden 

 vessel, and when this process is finished pour the two solutions 

 into the required amount of water in the spraying tank. 



This spray will be milk-white. It is the most efficient remedy 

 for chewing insects, and it may be added to the lime-sulphur, 

 Bordeaux or other spray. In doing this, if you have dissolved 

 the foregoing amounts in the six quarts of water, add them 

 separately to fifteen gallons of the other mixture larger and 

 smaller amounts in the same proportion; or, mix two pounds of 

 the commercial paste in fifty gallons. 



INSECTICIDES FOR SUCKING INSECTS 



7. Standard Lime-Sulphur Mixture. Lime-sulphur mixtures 

 are made and sold by chemical companies. When prepared by 

 reliable people, they are recommended, and will give the very 

 best of satisfaction. Directions for diluting and using each will 

 accompany the solution. Generally about one gallon of the 

 concentrated commercial solution to eight gallons of water will 

 be what is required for a dormant spray. As noted before, there 

 are great differences in the value of different lime-sulphur 

 solutions that are due to differences in process of manufacture, 

 and not to varying amounts of lime or of sulphur. It is a chemi- 

 cal composition of the final product, a chemical fusing of the 

 elements, that makes the differences more than anything 

 else. If you haven't many trees, it is always cheaper and 

 less bother to buy prepared lime-sulphur, and many times 

 it is so with large orchards to spray. Unless you prepare 

 your own solution very carefully, you will not have nearly 

 so good material as that you can buy. 



For the home-boiled solution, use fifteen pounds of fresh 

 stone lime, fifteen pounds of sulphur and fifty gallons of water. 

 Slake the lime in an iron kettle in which the mixture is to be 

 boiled, using enough water to cover the lime. (Don't use copper 

 kettle.) Better make a paste of the sulphur before you put it 

 in, or at least sift it thoroughly. Stir while adding the sulphur, 

 which should go in while the lime is slaking, then add ten or 



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